Harrison Ford - who will reprise his role of Han Solo in Star Wars Episode VII - will reportedly not require the same treatment, as producers are said to be happy with his current physique.

JJ Abrams will direct the upcoming seventh installment of the sci-fi franchise, after George Lucas sold the rights to Disney last year.

Fisher recently said of Star Wars being bought by Disney and the planned new movie trilogy: "I'm glad they are doing a new movie because they are sending a trainer to my house so I can get in really good shape. So I'm really eating a lot of sugar in advance, as you can see.

"By the time I really get down to it I will have eaten everything."

Disney will release the blockbuster in cinemas in 2015.

'Star Wars' behind-the-scenes pictures - photo gallery:

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George Lucas directs Carrie Fisher on the set of Star Wars: A New Hope.
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